Quick Task 1: Using only the numbers 1,2 and 3, arrange them in such a way so that 1,2 and 3 appear only once in each column and row.
Possible solutions
There are quite a few solutions. Younger children could investigate all the different ways you can make a 123 grid.
Ask pupils how they achieved their grids. Explain that using a methodical method of shifting the numbers along will produce a suitable grid.
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